Impulsive choice, or the preference for smaller, immediate rewards over larger, delayed rewards, is a behavioral process implicated in addiction, obesity, and other adverse health outcomes. Prior research suggests that prolonged exposure to delayed consequences can reduce impulsive choice over time, though recent findings raise questions about the generality of these effects across sex and species. The present study replicates and extends delay-exposure research by examining long-term effects in both male and female Sprague Dawley rats. Rats are randomly assigned to delay-exposure training, immediacy-exposure training, or a no-training control condition. Impulsive choice is assessed longitudinally across a 12-15 month period to evaluate the durability of training effects. Findings from this study can help clarify how experience shapes self-control and decision-making and ideally will help inform the development of behavioral interventions that are durable and clinically relevant.
